update

KayzzzZ · KayzzzZ · commit 52f69b45b603 · 2025-04-14T14:04:06.000+08:00
diff --git a/core/collection_pipeline/serializer/SLSSerializer.cpp b/core/collection_pipeline/serializer/SLSSerializer.cpp
@@ -18,7 +18,6 @@
 
 #include "json/json.h"
 
-#include "Logger.h"
 #include "collection_pipeline/serializer/JsonSerializer.h"
 #include "common/Flags.h"
 #include "common/compression/CompressType.h"
diff --git a/core/common/NetworkUtil.cpp b/core/common/NetworkUtil.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright 2023 iLogtail Authors
+ * Copyright 2025 iLogtail Authors
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/core/common/NetworkUtil.h b/core/common/NetworkUtil.h
@@ -1,5 +1,5 @@
 /*
- * Copyright 2023 iLogtail Authors
+ * Copyright 2025 iLogtail Authors
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/core/common/ProcParser.cpp b/core/common/ProcParser.cpp
@@ -1,4 +1,4 @@
-// Copyright 2023 iLogtail Authors
+// Copyright 2025 iLogtail Authors
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
diff --git a/core/common/ProcParser.h b/core/common/ProcParser.h
@@ -1,4 +1,4 @@
-// Copyright 2023 iLogtail Authors
+// Copyright 2025 iLogtail Authors
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
diff --git a/core/common/TimeUtil.cpp b/core/common/TimeUtil.cpp
@@ -422,7 +422,6 @@ std::chrono::nanoseconds GetTimeDiffFromMonotonic() {
     auto now_ns = std::chrono::duration_cast<std::chrono::nanoseconds>(now.time_since_epoch()).count();
     auto boot_ns = t.tv_sec * 1000000000ULL + t.tv_nsec;
     return std::chrono::nanoseconds(now_ns - boot_ns);
-// linux windows
 #elif defined(__APPLE__)
     return std::chrono::nanoseconds(0);
 #endif
diff --git a/core/ebpf/Config.cpp b/core/ebpf/Config.cpp
@@ -1,4 +1,4 @@
-// Copyright 2023 iLogtail Authors
+// Copyright 2025 iLogtail Authors
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
diff --git a/core/ebpf/Config.h b/core/ebpf/Config.h
@@ -1,4 +1,4 @@
-// Copyright 2023 iLogtail Authors
+// Copyright 2025 iLogtail Authors
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
diff --git a/core/ebpf/SourceManager.cpp b/core/ebpf/SourceManager.cpp
@@ -1,4 +1,4 @@
-// Copyright 2023 iLogtail Authors
+// Copyright 2025 iLogtail Authors
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
diff --git a/core/ebpf/SourceManager.h b/core/ebpf/SourceManager.h
@@ -1,4 +1,4 @@
-// Copyright 2023 iLogtail Authors
+// Copyright 2025 iLogtail Authors
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
diff --git a/core/ebpf/driver/BPFMapTraits.h b/core/ebpf/driver/BPFMapTraits.h
@@ -1,4 +1,4 @@
-// Copyright 2023 iLogtail Authors
+// Copyright 2025 iLogtail Authors
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
diff --git a/core/ebpf/driver/CallName.h b/core/ebpf/driver/CallName.h
@@ -1,4 +1,4 @@
-// Copyright 2023 iLogtail Authors
+// Copyright 2025 iLogtail Authors
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
diff --git a/core/ebpf/driver/FileFilter.cpp b/core/ebpf/driver/FileFilter.cpp
@@ -1,4 +1,4 @@
-// Copyright 2023 iLogtail Authors
+// Copyright 2025 iLogtail Authors
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
diff --git a/core/ebpf/driver/FileFilter.h b/core/ebpf/driver/FileFilter.h
@@ -1,4 +1,4 @@
-// Copyright 2023 iLogtail Authors
+// Copyright 2025 iLogtail Authors
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
diff --git a/core/ebpf/driver/IdAllocator.h b/core/ebpf/driver/IdAllocator.h
@@ -1,4 +1,4 @@
-// Copyright 2023 iLogtail Authors
+// Copyright 2025 iLogtail Authors
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
diff --git a/core/ebpf/driver/Log.cpp b/core/ebpf/driver/Log.cpp
@@ -1,4 +1,4 @@
-// Copyright 2023 iLogtail Authors
+// Copyright 2025 iLogtail Authors
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -17,17 +17,18 @@
 logtail::ebpf::eBPFLogHandler log_fn = nullptr;
 
 void set_log_handler(logtail::ebpf::eBPFLogHandler fn) {
-    if (!log_fn)
+    if (log_fn == nullptr) {
         log_fn = fn;
+    }
 }
 
 void ebpf_log(logtail::ebpf::eBPFLogType level, const char* format, ...) {
-    va_list args;
-
-    va_start(args, format);
-    if (log_fn) {
-        (void)log_fn(int16_t(level), format, args);
+    if (log_fn == nullptr) {
+        return;
     }
 
+    va_list args;
+    va_start(args, format);
+    (void)log_fn(int16_t(level), format, args);
     va_end(args);
 }
diff --git a/core/ebpf/driver/Log.h b/core/ebpf/driver/Log.h
@@ -1,4 +1,4 @@
-// Copyright 2023 iLogtail Authors
+// Copyright 2025 iLogtail Authors
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
diff --git a/core/ebpf/driver/NetworkFilter.cpp b/core/ebpf/driver/NetworkFilter.cpp
@@ -1,4 +1,4 @@
-// Copyright 2023 iLogtail Authors
+// Copyright 2025 iLogtail Authors
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
diff --git a/core/ebpf/driver/NetworkFilter.h b/core/ebpf/driver/NetworkFilter.h
@@ -1,4 +1,4 @@
-// Copyright 2023 iLogtail Authors
+// Copyright 2025 iLogtail Authors
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
diff --git a/core/ebpf/driver/eBPFDriver.cpp b/core/ebpf/driver/eBPFDriver.cpp
@@ -1,4 +1,4 @@
-// Copyright 2023 iLogtail Authors
+// Copyright 2025 iLogtail Authors
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
diff --git a/core/ebpf/driver/eBPFDriver.h b/core/ebpf/driver/eBPFDriver.h
@@ -1,4 +1,4 @@
-// Copyright 2023 iLogtail Authors
+// Copyright 2025 iLogtail Authors
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
diff --git a/core/ebpf/driver/eBPFWrapper.h b/core/ebpf/driver/eBPFWrapper.h
@@ -1,4 +1,4 @@
-// Copyright 2023 iLogtail Authors
+// Copyright 2025 iLogtail Authors
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
diff --git a/core/ebpf/eBPFServer.cpp b/core/ebpf/eBPFServer.cpp
@@ -1,4 +1,4 @@
-// Copyright 2023 iLogtail Authors
+// Copyright 2025 iLogtail Authors
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
diff --git a/core/ebpf/eBPFServer.h b/core/ebpf/eBPFServer.h
@@ -1,4 +1,4 @@
-// Copyright 2023 iLogtail Authors
+// Copyright 2025 iLogtail Authors
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
diff --git a/core/ebpf/plugin/AbstractManager.cpp b/core/ebpf/plugin/AbstractManager.cpp
@@ -1,4 +1,4 @@
-// Copyright 2023 iLogtail Authors
+// Copyright 2025 iLogtail Authors
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
diff --git a/core/ebpf/plugin/AbstractManager.h b/core/ebpf/plugin/AbstractManager.h
@@ -1,4 +1,4 @@
-// Copyright 2023 iLogtail Authors
+// Copyright 2025 iLogtail Authors
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
diff --git a/core/ebpf/plugin/ProcessCacheManager.cpp b/core/ebpf/plugin/ProcessCacheManager.cpp
@@ -1,4 +1,4 @@
-// Copyright 2023 iLogtail Authors
+// Copyright 2025 iLogtail Authors
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
diff --git a/core/ebpf/plugin/ProcessCacheManager.h b/core/ebpf/plugin/ProcessCacheManager.h
@@ -1,4 +1,4 @@
-// Copyright 2023 iLogtail Authors
+// Copyright 2025 iLogtail Authors
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
diff --git a/core/ebpf/plugin/file_security/FileSecurityManager.cpp b/core/ebpf/plugin/file_security/FileSecurityManager.cpp
@@ -1,4 +1,4 @@
-// Copyright 2023 iLogtail Authors
+// Copyright 2025 iLogtail Authors
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
diff --git a/core/ebpf/plugin/file_security/FileSecurityManager.h b/core/ebpf/plugin/file_security/FileSecurityManager.h
@@ -1,4 +1,4 @@
-// Copyright 2023 iLogtail Authors
+// Copyright 2025 iLogtail Authors
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
diff --git a/core/ebpf/plugin/network_observer/Connection.cpp b/core/ebpf/plugin/network_observer/Connection.cpp
@@ -1,4 +1,4 @@
-// Copyright 2023 iLogtail Authors
+// Copyright 2025 iLogtail Authors
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
diff --git a/core/ebpf/plugin/network_observer/Connection.h b/core/ebpf/plugin/network_observer/Connection.h
@@ -1,4 +1,4 @@
-// Copyright 2023 iLogtail Authors
+// Copyright 2025 iLogtail Authors
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
diff --git a/core/ebpf/plugin/network_observer/ConnectionManager.h b/core/ebpf/plugin/network_observer/ConnectionManager.h
@@ -1,4 +1,4 @@
-// Copyright 2023 iLogtail Authors
+// Copyright 2025 iLogtail Authors
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
diff --git a/core/ebpf/plugin/network_observer/NetworkObserverManager.cpp b/core/ebpf/plugin/network_observer/NetworkObserverManager.cpp
@@ -1,4 +1,4 @@
-// Copyright 2023 iLogtail Authors
+// Copyright 2025 iLogtail Authors
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -127,10 +127,15 @@ NetworkObserverManager::NetworkObserverManager(std::shared_ptr<ProcessCacheManag
           [this](std::unique_ptr<AppMetricData>& base, const std::shared_ptr<AbstractRecord>& o) {
               auto* other = static_cast<AbstractAppRecord*>(o.get());
               int statusCode = other->GetStatusCode();
-              base->m2xxCount += statusCode / 100 == 2;
-              base->m3xxCount += statusCode / 100 == 3;
-              base->m4xxCount += statusCode / 100 == 4;
-              base->m5xxCount += statusCode / 100 == 5;
+              if (statusCode >= 500) {
+                  base->m5xxCount += 1;
+              } else if (statusCode >= 400) {
+                  base->m4xxCount += 1;
+              } else if (statusCode >= 300) {
+                  base->m3xxCount += 1;
+              } else {
+                  base->m2xxCount += 1;
+              }
               base->mCount++;
               base->mErrCount += other->IsError();
               base->mSlowCount += other->IsSlow();
diff --git a/core/ebpf/plugin/network_observer/NetworkObserverManager.h b/core/ebpf/plugin/network_observer/NetworkObserverManager.h
@@ -1,4 +1,4 @@
-// Copyright 2023 iLogtail Authors
+// Copyright 2025 iLogtail Authors
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
diff --git a/core/ebpf/plugin/network_security/NetworkSecurityManager.cpp b/core/ebpf/plugin/network_security/NetworkSecurityManager.cpp
@@ -1,4 +1,4 @@
-// Copyright 2023 iLogtail Authors
+// Copyright 2025 iLogtail Authors
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
diff --git a/core/ebpf/plugin/network_security/NetworkSecurityManager.h b/core/ebpf/plugin/network_security/NetworkSecurityManager.h
@@ -1,4 +1,4 @@
-// Copyright 2023 iLogtail Authors
+// Copyright 2025 iLogtail Authors
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
diff --git a/core/ebpf/plugin/process_security/ProcessSecurityManager.cpp b/core/ebpf/plugin/process_security/ProcessSecurityManager.cpp
@@ -1,4 +1,4 @@
-// Copyright 2023 iLogtail Authors
+// Copyright 2025 iLogtail Authors
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
diff --git a/core/ebpf/plugin/process_security/ProcessSecurityManager.h b/core/ebpf/plugin/process_security/ProcessSecurityManager.h
@@ -1,4 +1,4 @@
-// Copyright 2023 iLogtail Authors
+// Copyright 2025 iLogtail Authors
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
diff --git a/core/ebpf/protocol/AbstractParser.h b/core/ebpf/protocol/AbstractParser.h
@@ -1,4 +1,4 @@
-// Copyright 2023 iLogtail Authors
+// Copyright 2025 iLogtail Authors
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
diff --git a/core/ebpf/protocol/ParserRegistry.h b/core/ebpf/protocol/ParserRegistry.h
@@ -1,4 +1,4 @@
-// Copyright 2023 iLogtail Authors
+// Copyright 2025 iLogtail Authors
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
diff --git a/core/ebpf/protocol/ProtocolParser.cpp b/core/ebpf/protocol/ProtocolParser.cpp
@@ -1,4 +1,4 @@
-// Copyright 2023 iLogtail Authors
+// Copyright 2025 iLogtail Authors
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
diff --git a/core/ebpf/protocol/ProtocolParser.h b/core/ebpf/protocol/ProtocolParser.h
@@ -1,4 +1,4 @@
-// Copyright 2023 iLogtail Authors
+// Copyright 2025 iLogtail Authors
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
diff --git a/core/ebpf/protocol/http/HttpParser.cpp b/core/ebpf/protocol/http/HttpParser.cpp
@@ -1,4 +1,4 @@
-// Copyright 2023 iLogtail Authors
+// Copyright 2025 iLogtail Authors
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -37,9 +37,7 @@ std::vector<std::shared_ptr<AbstractRecord>> HTTPProtocolParser::Parse(struct co
     record->SetStartTsNs(dataEvent->start_ts);
     auto spanId = GenerateSpanID();
     // slow request
-    if (record->GetLatencyMs() > 500) {
-        record->MarkSample();
-    } else if (sampler->ShouldSample(spanId)) {
+    if (record->GetLatencyMs() > 500 || sampler->ShouldSample(spanId)) {
         record->MarkSample();
     }
 
diff --git a/core/ebpf/type/AggregateEvent.h b/core/ebpf/type/AggregateEvent.h
@@ -1,4 +1,4 @@
-// Copyright 2023 iLogtail Authors
+// Copyright 2025 iLogtail Authors
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
diff --git a/core/ebpf/type/CommonDataEvent.h b/core/ebpf/type/CommonDataEvent.h
@@ -1,4 +1,4 @@
-// Copyright 2023 iLogtail Authors
+// Copyright 2025 iLogtail Authors
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
diff --git a/core/ebpf/type/NetworkObserverEvent.h b/core/ebpf/type/NetworkObserverEvent.h
@@ -1,4 +1,4 @@
-// Copyright 2023 iLogtail Authors
+// Copyright 2025 iLogtail Authors
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -60,10 +60,6 @@ class AbstractRecord {
     virtual bool IsSlow() const = 0;
     virtual int GetStatusCode() const = 0;
 
-    virtual DataTableSchema GetMetricsTableSchema() const = 0;
-
-    virtual DataTableSchema GetTableSchema() const = 0;
-
 protected:
     uint64_t mStartTs;
     uint64_t mEndTs;
@@ -94,8 +90,6 @@ class ConnStatsRecord : public AbstractNetRecord {
     int GetStatusCode() const override { return 0; }
 
     std::string GetSpanName() override { return "CONN_STATS"; }
-    DataTableSchema GetMetricsTableSchema() const override { return kNetMetricsTable; }
-    DataTableSchema GetTableSchema() const override { return kNetTable; }
     int mState;
     uint64_t mDropCount = 0;
     uint64_t mRttVar = 0;
@@ -129,8 +123,6 @@ class AbstractAppRecord : public AbstractNetRecord {
     virtual std::string GetProtocolVersion() const = 0;
     virtual std::string GetPath() const = 0;
 
-    DataTableSchema GetMetricsTableSchema() const override { return kAppMetricsTable; }
-
     mutable std::string mTraceId;
     mutable std::string mSpanId;
 };
@@ -142,8 +134,6 @@ class HttpRecord : public AbstractAppRecord {
     ~HttpRecord() override { sDestructCount++; }
     HttpRecord(std::shared_ptr<Connection> connection) : AbstractAppRecord(connection) { sConstructCount++; }
 
-    DataTableSchema GetTableSchema() const override { return kHTTPTable; }
-
     void SetPath(const std::string& path) { mPath = path; }
 
     void SetRealPath(const std::string& path) { mRealPath = path; }
diff --git a/core/ebpf/type/table/AppTable.h b/core/ebpf/type/table/AppTable.h
diff --git a/core/ebpf/type/table/BaseElements.h b/core/ebpf/type/table/BaseElements.h
diff --git a/core/ebpf/type/table/DataTable.h b/core/ebpf/type/table/DataTable.h
diff --git a/core/ebpf/type/table/FileSecurityTable.h b/core/ebpf/type/table/FileSecurityTable.h
diff --git a/core/ebpf/type/table/HttpTable.h b/core/ebpf/type/table/HttpTable.h
diff --git a/core/ebpf/type/table/NetTable.h b/core/ebpf/type/table/NetTable.h
diff --git a/core/ebpf/type/table/NetworkSecurityTable.h b/core/ebpf/type/table/NetworkSecurityTable.h
diff --git a/core/ebpf/type/table/ProcessTable.h b/core/ebpf/type/table/ProcessTable.h
diff --git a/core/ebpf/util/AggregateTree.h b/core/ebpf/util/AggregateTree.h
diff --git a/core/ebpf/util/FrequencyManager.cpp b/core/ebpf/util/FrequencyManager.cpp
diff --git a/core/ebpf/util/TraceId.cpp b/core/ebpf/util/TraceId.cpp
diff --git a/core/ebpf/util/TraceId.h b/core/ebpf/util/TraceId.h
diff --git a/core/ebpf/util/converger/Converger.cpp b/core/ebpf/util/converger/Converger.cpp
diff --git a/core/ebpf/util/converger/Converger.h b/core/ebpf/util/converger/Converger.h
diff --git a/core/ebpf/util/converger/ConvergerFactory.cpp b/core/ebpf/util/converger/ConvergerFactory.cpp
diff --git a/core/ebpf/util/converger/ConvergerFactory.h b/core/ebpf/util/converger/ConvergerFactory.h
diff --git a/core/ebpf/util/sampler/Sampler.cpp b/core/ebpf/util/sampler/Sampler.cpp
diff --git a/core/ebpf/util/sampler/Sampler.h b/core/ebpf/util/sampler/Sampler.h
diff --git a/core/metadata/K8sMetadata.cpp b/core/metadata/K8sMetadata.cpp
diff --git a/core/unittest/ebpf/CommonUtilUnittest.cpp b/core/unittest/ebpf/CommonUtilUnittest.cpp
diff --git a/core/unittest/ebpf/NetworkObserverEventUnittest.cpp b/core/unittest/ebpf/NetworkObserverEventUnittest.cpp
diff --git a/core/unittest/ebpf/NetworkObserverUnittest.cpp b/core/unittest/ebpf/NetworkObserverUnittest.cpp
diff --git a/core/unittest/ebpf/TableUnittest.cpp b/core/unittest/ebpf/TableUnittest.cpp

Original file line number	Diff line number	Diff line change
`@@ -1,5 +1,5 @@`
`1`	`1`	`/*`
`2`		`- * Copyright 2023 iLogtail Authors`
	`2`	`+ * Copyright 2025 iLogtail Authors`
`3`	`3`	`*`
`4`	`4`	`* Licensed under the Apache License, Version 2.0 (the "License");`
`5`	`5`	`* you may not use this file except in compliance with the License.`
Original file line number	Diff line number	Diff line change
`@@ -1,4 +1,4 @@`
`1`		`-// Copyright 2023 iLogtail Authors`
	`1`	`+// Copyright 2025 iLogtail Authors`
`2`	`2`	`//`
`3`	`3`	`// Licensed under the Apache License, Version 2.0 (the "License");`
`4`	`4`	`// you may not use this file except in compliance with the License.`